There isn't that much in terms of movie scores that really, really creep me out, but along some of the pieces used with The Exorcist Score, (Night of the Electric Insects for example, I didn't know what to expect when I first put it on with volume quite loud. I don't listen to it anymore, for some reason it scared the complete hell out of me) this score also gives me the creeps. I don't have it infront of me, but I think it's the Twisted Abduction track. that playful but incredibly sinister part where the hands comes out of the TV..the music is the worst offender for me.
There's something about that part that makes me go cold and stiff everytime I hear it. Fantastic horrorscore.